Model number: FC-U6000-1 Series: CUES U6000 Series 10-speed Color: Series Color Rear Speeds: 40825; Compatible Chain: LINKGLIDE, HG 11-speed; Chainline (mm): 52 (30T, 32T), 50 (40T, 42T); O.L.D.: Through (mm): 148, 142 (30T, 32T), 142 (40T, 42T); O.L.D.: Internal/External Type: 141, 135 (30T, 32T), 135 (40T, 42T); P.C.D. (mm): 96 (30T, 32T), 110 (40T, 42T); Spider/Gear Arm: 4; Chainring Combination: 30T, 32T, 40T, 42T; Q-Factor (mm): 180; Compatible Bottom Bracket Type: Outer chain case compatible: X (40T, 42T) Specifications: 2-piece crankset, stainless steel chain guard mounting screws, crank mounting screws included. Teeth count: 40T